X x x x x



May 18 1926.

1585.402 M. MALLORY IGNITION SYSTEM Filed se t. 21, 1925 llll abtinmzq atented May 18,1926 i UNITED STAT ES PATENT ,"OFFICTE.

MARION MALLORY, OF TOLEDO, OHIO, ASSIGNOR TO MALLORY ELECTRIC CORPORA- TION, OF TOLEDO, OHIO, A CORPORATION OF- OHIO.

IG NITION SYSTEM.

' poses.

It is well known that in the usual ignition systems where batteries are relied upon, the sparks produced are practically instantaneous andthey do not have much heat value as the sparks produced by a high tension magneto. It is also well known, that a high tension magneto produces sparks with great heat value and of long duration at all engine speeds, 'and inthe ordinary battery ignition systems the sparks vary in heat value at difierent engine speeds, that is the sparks continue to grow weaker and have less heat value as the speed of the engine is increased.

The object of myinvention is to provide an ignition system utilizingbattery or continuous current that will produce a spark equivalent to,or substantially the same as the spark produced from a high tension magneto, and to provide an ignitlon system without the use of any permanent magnets, rotating armatures, or inductors as used in the high tension magneto, and yet produce sparks of the same effective value as the. sparks produced in the spark coil of a high tension magneto.

Other objects of my invention and advantages will appear from the following detailed description.

The figure is a diagrammatic illustration of a system involving my invention;

In the system shown in the figure, the spark plug gaps 1 are connected to the distributor 2 and are grounded in the manner well known in the art.. A secondary winding- 3 is connected to the distributor by means of which the high tension current produced passes to the spark plugs 1. The spark coil is provided with a core 4, a primary winding 5 and an energizing wmd- ,i 6. The secondary coil 3 surrounds the primary winding 5 and is in direct inductive relation to the primary winding. A battery 7 is connected to one terminal of the coil 6. The other terminal of the coil 6 is connected to a terminal of the, coil 5 and the remaining terminal of the coil 5 is connected to the circuit closer-and breaker 8. The terminal of the coil 6 to which the coil 5 is connected is connected to the circuit closer and breaker 9. A condenser 10 is 7 Application filed September 2 1, 1923. Serial No. 664,128.

connected between the circuit breakers 8 and 9. The circuit breakers are operated by means of the cams 11 which are driven by the crank shaft of the internal combus tion engine at'a speed in the usual ratio to the speed of the crank shaft of the engine. The rotor 13 of the timer 2 is also connected to the cams 11 and rotates therewith. The circuit of the coils 5 and '6 maybe closed by means of a switch 12. The coils 3 and 5 are located on the core 14 that is located between the ends of the core 4.

Having described the parts, I will now describe the operation of my invention. Assuming switch 12 is closed, the current will flow from'the battery 7 thru the winding 6 to the circuit breaker 9 thru its contacts to ground, and back to the battery. The current now flowing throughout. energizing winding 6 sets up magnetic lines within the core 4. Core 14 of spark coil will also be energized by the magnetic lines of core 4. At t s point the magnetic lines in core 4 and core 14 are not opposing each other.

The circuit breaker 8 closes and altho a winding 5 is a closed circuit with the battery all the current will continue to flow thru circuit breaker 9 and not thru circuit breaker 8 because the circuit thru circuit breaker 9 offers a very low resistance, consequentl the magnetic lines in core 14 are not a fected. Cams 11 being further rotatedto open circuit breaker 9, leaving circuit that was formally set up in core 14 by wind- .ing 6 and core 4. This sudden reverse of magnetic flux in the spark coil 14 induces a high tension current of long duration and great heat value in the winding 3 in the same manner as the current is produced in the secondary winding of a high tension magneto. The high tension current that is induced in winding 3 is distributed to the spark plugs 1 by distributor rotor 13 in the firing order ofthe engine. In the core 4 and the core 14 the ma 'etic flux are now opposing each other. ams 11 are again rotated allowing circuit breaker 9 to close.

The current ceases to W in winding 5 altho i the circuit breaker 8 is still closed because the current flollows-the path offering very low winding of the magneto a spar armature of a high resistance as I have explained, being thru circuit breaker 9. Windin 5 is no longer an'energizing winding that is closed through the circuit breakers 8 and 9 but acts as a choke winding holding up the magnetic flux that was set up by itself until cams 11 are rotated to open 'circuit breaker 8, which opens the circuit in winding 5 releasing the choke. The circuit breaker 9 still being closed and the magnetic lines reversing the magnetic lines that were set up and held in choke by winding 5 in core 14, inducing another high tension current in winding 3 of long duration and great heat value which is distributed to spark plugs in firing order of the engine as explained.

Having explained the operation of the device it will be seen that the magnetic lines are never reversed in the ener izing core 4 and that the current is always flowing in energizing winding 6. 'It' will also be ob served that winding 5 acts also as a tempo rary energizing c011 and also a choke coil, and that there is a high tension current induced in winding 3 upon energizing core 14 by winding 5 and upon opening the choke coil, by opening the circuit of winding 5 by circuit breaker 8, whereby twice as many sparks are produced as in the ordinary spark coil, involving the same principle as a high tension magneto.

As I have explained that my device actually produces sparks of thesame character as the sparks produced by a high tension ma eto, I will now compare my invention wit a high tension magneto. Core 4 acts the same as a permanent magnet of a high tension magneto because it is permanently magnetized by winding 6. Core 14 acts as an armature of the high tension magneto, winding 3 acts as the secondary winding of the magneto, winding 5 acts as the primary and circuit breaker 8 acts as the circuit breaker for the primary winding of the magneto. First operation, core 14 is energized by core 4 in the same manner that the armature of a high tension magneto is ener ized by the permanent magnet, circuit brea er 8 closes the circuit of the primary winding 5 holding the flux in the core 14 up in chokein the same as in the magneto armature. Second operation its circuit breaker 9 opens causing current to ow in winding 5 which reverses the first named flux that was set up in core 14 by core 4 and held by winding 5, producing k from the secondary winding 3. This action be' the same as rotating the tension magneto to reverse the flux to produce a spark. Third operation, the circuit breaker 9 closes but the last named flux set up in core 14 is held up in choke by circuit breaker 8 still remaining closed. Fourth operation, circuit breaker 8 from core 4 opens releasing the clfoke winding 5 allowing the magnetic flux to be reversed in core 14 by the flux existing in core 4. The sudden reversal induces a'high tension current in secondary winding of long duration and great heat value. Having described the device and the operations so it will be clearly understood by those skilled in the art I do not wish to be limited to changes that I may make that does not depart from the principle and operations of my invention.

What I claim is:

1. In an ignition system, a source of current, an iron core, an energizing winding on said core, a transformer core, a primary winding and a secondary winding on said transformer core, circuit controlling means for connecting the said primary winding to the said source through said energizing winding, a circuit controlling means for connect-ing the energizing winding to said source independent of the primary winding during the time that the circuit of the said primary winding is open, whereby a magnetic flux is set up in said iron core and transformer core by said energizing wind- 2. In an i nition system, a source of current, a trans ormer core, an energizing winding on a portion of said transformer core, a primary winding and a secondary winding on another portion of said transformer core, circuit controlling means for connecting said energizing winding and saidprimary winding to said source, the said circuit controlling means first connecting the energizing winding to said source independent of the primary winding, whereby said transformer core is completely magnetized within the said energizing winding 'and the primary Winding, the said circuit controlling means then connecting the primary windingito said source through the energizing winding, whereby the primary winding and the energizing winding are connected in series with the source to reverse the magnetic lines within the core of the primary winding and inducing a hi h tension current into the secondary win ing.

3. In an ignition system for internal combustion engines, a battery, a air of colls, a secondary coil in inductive re ation to one of said coils and a pair of circuit breakers for completin the circuit of'the coils in succession and or short-circuiting one of the said coils before the circuit of the other of the coils is open and maintaining a short circuit for an appreciable length of time while the circuit of the said other coil is maintained open.

4. In an ignition system for internal com bustion engine's, secondary coil in inductive relation to one of said coils and a pairof circuit breakers for completing the circuit of the coils in sue memos I d cession and for short-circuiting one of the in which the other coil of said pair of coils 7 said coils, the last named coil being wound is wound. i v in a direction opposite "to that in which the 8. In an ignition-system for internal comother of the said pair of coils is wound. bustion engines, a source of current, a core,

5. In an ignition system for internal coman energizing coil located on one part of the bustion engines, a battery, a pair of coils, a core, a primary coil located on another part 4 secondary coil ,in inductive'relation to one of of the core, a secondary coil in inductive resaid coils and a pair of circuit breakers for lation to the primary coil, the energizing completing the circuit of the coils in succescoil connected to the primary coil, a battery sion and for short-circuiting one of the said connected to the primary coil, a pair of circoils before the circuit of the other of the cuit breakers, one connected to the conneccoils is open and maintaining the short cir tion between the energizing coil andthe pricuit for an appreciable length of time while mary coil and the other connected to the prithe circuit of the said other coilis mainmary coil, means for alternately opening and tained open, the short-circuited coil being closing the circuit breakers, the circuit wound in a. direction opposite to that in breakers however, both remaining closed and which the other coil of said pair of coils is opened during appreciable periods of time. wound. 9. In an ignition system for internal com- 6. In an ignition system for internal conibustion engines, a source of current, a core, bustion engines, a pair of coils, a secondary an energizing coil located on one part of the.

; coil in inductive relation to one of the said core,-a primary coil located on another part coils, a pair of circuit breakers for alternateof the core, a secondary coil in inductiverely' closing and breaking the circuit of the lat-ion to the primary coil, the energizing c-oil said pair of coils and for connecting first one connected to the primary coil, a battery concoil with the battery and then both coils in nected to-the primary coil, a pair of circuit series with the battery and short-circuiting breakers, one connected to the connection bethe coil that the secondary coil is in inductive tween the energizing coil and the primary relation with. coil and the other connected to the primary 7 In an ignition system for internal comcoil, means for alternately opening and closbustion engines, a pair of coils, a secondary ing the circuit breakers, the circuit breakers coil in inductive relation to one of the said however, both remaining closed and opened coils, a pair of circuit breakers for alternateduring appreciable periods of time, the prily closing and breaking the circuit of the mary coil being wound in a direction opposaid pair of coils and for connecting first site to that in which the energizing coil is one coil with the battery andthen both coils wound.

in series with the battery and short-circuit- In testimony whereof 'I have hereunto ing the coil that the secondary coil is'in insigned my name to this specification. ductive relation with, the short circuited coil i bei ng wound in a direction opposite to that v MARION MALLQRY. 

